I will organize one CSV file or Excel sheet (up to 250 rows and 10 columns) into a clear XLSX workbook. I tidy spacing and layout, preserve IDs and all source rows, and flag repeated IDs, duplicate rows, missing values and ambiguities. You receive an original-data sheet, cleaned table and issue log. Please send a redacted sample and tell me the key column, date/decimal conventions, and changes you want. I will confirm scope before work starts. I do not guess missing values or silently change quantities, prices or dates. PDFs, scans, macros and complex formula repair are outside this service. One correction round is included for the agreed source and scope. AI-assisted tools may be used with validation. Please share only data you are authorized to provide and disclose any AI-use restrictions.